mg7610

I having issues trying to sort thru all wheels that are available and whether they will fit this oldster. I'm in a touristy area of FL (Punta Gorda) and the two bike shops pretty much just sell and rent cruisers to the olds. There aren't any MTB centric shops like I had up north to ask for advice so I'm looking for parts on the internet.


Rear wheel is a Weinman 519 cheapo with a 7 speed Shimono cassette and derailer. The hub mount has 5" of space. The rim is 1" wide.

It seems MTB rims are wider now and days 1.5" is the standard. Weight isn't a concern, I just want something better than 519, I'm going north and looking forward to getting in the dirt.


Questions;


Will a 1.5 rim work on a bike that came with 1.0? The posts to mount the calipers have 3" distance between them. would a wider rim affect braking?

Can a 7speed derailer work on a 8speed cassette, it seems 7speeds are being phased out, I'll be replacing the cassette, it would be easier if I could buy the wheel and the cassette at the same place

And any recommendations on sellers would be appreciated


Thnx

DMC707

Ebay and Amazon are your friend.

26" mountain bike wheelsets are still widely available, so is 7 speed equipment. 7 speed equipment does not have much compatibility with 8 speed. A 7 speed hub will not fit an 8 speed cassette in a lot of cases - Rims are available to lace to your existing hubs too

Modern wider mountain bike wheelsets are typically 27.5 or 29" and the rim will be profiled for disc brakes so those are out- but good thing the 26" wheel size is till the most common worldwide.

Heres a budget way to re-furbish your machine if you dont want to search for more correct parts for your bike. If it is a better grade bicycle with Suntour XC Comp or Pro , Shimano Deore , Deore DX, LX, or XT parts, it would be worth keeping it together than throwing a box of SunRace or Microshift parts at it though

Amazon.com : CyclingDeal Bicycle Mountain Bike 26 inch Double Wall Rims MTB Wheelset 26" 7 Speed with Compatible with Shimano MF-TZ500-7 14-34T Freewheel - Front & Back Wheels : Sports & Outdoors

Amazon.com : Sunrace SLM10 Friction Shifter Set : Bike Shifters And Parts : Sports & Outdoors

Amazon.com : Sunrace SR-RDM30 Rear Derailleur 7-Speed, SGS w/o Bracket Grey : Rear Bike Derailleurs : Sports & Outdoors

70sSanO

First things first, as stated but a little more to the point… mountain bike wheels are no longer 26” with rim brakes. Bike shops won’t have any or will have cheap ones like what you have now.

The typical decent new 26” rim brake wheelset are Sun Rhyno Lite with Shimano T610. They are in the $200 range.

8-10 years ago you could have picked up a good used Mavic/Xt set for $100, but demand, along with prices, have gone crazy.

I’ve had very good success on eBay, but it is easy to get stung with older worn out wheels, or a bad freehub. If there is a bike co-op close by, you might find good wheels cheaper.

If your hubs are good, you can buy Rhyno Lites or CR-18s and have them laced to your hubs. Not sure if you’ll save anything.

John

curbtender

Pick a part...
https://fortmyers.craigslist.org/chl...350329789.html

mg7610

Thnx for the quick reply and info. The combo deal is interesting but my cassette is 12-28 and the low gear sprocket looks bigger than what I got.

Because this oportunity came out of nowhere I only have two weeks to get this together and shipped. I don’t have my tools down here or a functional workspace to take the hub apart to replace parts, I plan on buying a wheel, freehub and cassette, I should be able to put it together with the tools I have. The shops around here are swamped, and they quoted a price for trimming the rear wheel that was about the same price as buying a new one.
It would seem the cassette is what has to be original specs (7 speed) so I think that’s where to start.

This one seems to match my current rig which I’m pretty sure is an Uniglide
Shimano Tourney CS-HG200 7 Speed,

I’m having difficulty finding out which freehub would go with this cassette.

The wheel is available

Wheel Rear 26x1.5 Weinmann ZAC19 Black MSW 36 Alloy FW 5/7 Quick Release SS
If this won’t work raise your hand.

And, anything I should know about replacing the brake calipers that’s changed in the last 10 years? Sorry, I can't post links, too newbie

Thanks again everyone
Cheers

katsup

#1
Put a spacer behind the 7sp cassette on a 8sp+ freehub, fits perfect.
https://www.amazon.com/Wheels-Manufa.../dp/B001CJVLWO

#2
Older 7sp rear derailleurs will work fine with 8 and 9 speed. The newer shadow 9sp may not work with the lower speeds.
https://www.sheldonbrown.com/speeds.html --> Derailers -Rear

As for sourcing a wheel, used market and patience.

70sSanO

It won't work.

Well, maybe.

I have no clue what 26x1.5 even means. Is it 1-1/2" wide rim, or for a 1-1/2" tire width? I saw one on ebay that listed it as 559x19 and 26x1.5. I also saw a 26x1.5 as 26.5 internal width.

If it is tire size it should not be an issue, if it is really a 1-1/2" wide rim, I have no idea if there is enough room between the chainstays on an old mtb once you mount a tire.

What size tire are you planning on using?

John

ThermionicScott 

My money is on the rim being marked 1.5" (or 1.75" or 1.95" or whatever) as a suggestion for what tire width to use. The ZAC19 extrusion itself is nowhere close to being 1.5"/38mm wide.

Retro Grouch 

To answer your question reasonably, we need more accurate input data.

1. Steel or aluminum frame? It might make a difference.
2. What is the distance between the rear dropouts in millimeters?

My honest opinion is that the cheapest option would be to find a used mountain bike to ride. Once you get into swappong out parts you'll find you are going to need to replace the shifters, chain and probably brake levers, maybe some other stuff, and the cost will far exceed a used but still useable bike.

Never having been accused of being smart, if it was my aluminum bike I'd look for a 130mm OLD wheelset with Rhyno Lite rims and a 7-speed freewheel or cassette.
Steel frame I'd look for a Rhyno Lite wheelset with a 135mm OLD hub and 9-speed it.

Phil_gretz

^ what Retrogrouch said. Measurements are in millimeters or centimeters for bicycles, generally. The benefits are: (1) we think metrically here, so it's easier to provide you ready assistance, (2) although confusing at times, most wheels and tires (and dropout spacing) are dimensioned metrically, and (3) precision of the measure. Unfortunately, the MTB world still uses "inches" to loosely define its tire sizes, but the metric measure is more consistently understood.

katsup

A 92 DB Ascent is steel and most likely 135mm rear spacing.

ThermionicScott 

I found a catalog... 73mm bottom bracket shell usually means 130-135mm rear spacing, right?

https://www.rideandrepair.co.uk/Retro...talogue_RB.pdf

katsup

By the year I know it's 130 or 135mm, but yes, by the BB shell as well.

Almost certain it is a 135mm on the 92 as the ascent was mid level. Oldest DB I've had was a 1990 Apex which was 135mm rear spacing. Ascent EX and Ascent were the models under it.

ThermionicScott 

It's funny how fast they changed, once they did. My 1988 Diamondback Ascent has 126mm spacing!